问题
选择题
To improve the quality of our products, we asked for suggestions _____ had used the products. [ ]
A. whoever
B. who
C. whichever
D. which
答案
答案：A
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To improve the quality of our products, we asked for suggestions _____ had used the products. [ ]
A. whoever
B. who
C. whichever
D. which
答案：A